A 75-year-old man has been sentenced to life in prison for his third killing — this one the slaying of a disabled man in a dispute over the dining schedule at their senior home.

Jesse Moe Young was convicted of killing 61-year-old Donald DeSaix last year at their senior apartment complex in Sacramento. Young waited for his victim after their dispute, then fatally stabbed him in the chest.

At Friday's sentencing, an unrepentant Young said a life spent mostly in prison taught him never to back down.

Prosecutors say Young has been convicted of 17 crimes since he was 11. He served nine years for manslaughter after a 1995 killing in Sacramento and two years for manslaughter when he killed a man in Oakland 12 years earlier.